US2326312A - Typewriting and like machine - Google Patents

Description

8 Sheets-fSheet l Aug. l0, 1943. R. G. THOMPSON TYPEWRITING AND LIKE MACHINE Filed July 26, 1940 Aug; 1o, 1943.

R. G. THOMPSON TYPEWRITlNG AND LIKE MACHINE Filed July 26', 1940 8 Sheets-Sheet 2 Aug. 10, 1943. R. G. THOMPSON 2,326,312

TYPEWRITING AND LIKE MACHINE Filed July 26, 1940 8 Sheets-Sheet 3 album/1f AU8- 10, 1943. R. G. THOMPSON TYPEWRITING AND LIKE MACHINE Filed July 26, 1940 8 Sheets-Sheet 4 Aug. 10, 1943. R. G. THOMPSON TYPEWRITING AND LIKE MACHINE Filed July 26, 1940 8 Sheets-Sheet 5 Aug 10, 1943. R. G. THMPSON 2,326,312

TYPEWRTTING AND LIKE MACHINE Filed July 26, 1940 8 Sheets-Sheet 6 Aug- 10, 1943' n Y R. G. THoMPsoN 2,326,312

TYPEWRITING AND LIKE MACHINE Filed July 26, 1940 8 Sheets-Sheet 7 "Illlllllllllllll t, C No: 11u34 Aug. 10, 1943. R. G. THOMPSON TYPEWRITING AND LIKE MACHINE Filed July 26, 1940 8 Sheets-Sheet 8 E @Q www i llf. UNITED inner frame each .en Online 3 3 of Fig. 1. n;

VFigi? is a fragmentary, i i? tion of the mechanism shownin Fig'. 7.

Fig. lO is a fragmentary, secticnalvi'ewtaken khonline lS-ii oflifigi. .1

VFig 11. is airagrnentaryg sectionalview similar f Patented Ang. 10,1943 y TYPEWRfrrING imio'frlnniMaoinni:` iliiisseli G. rhbfiinsn, Elmira N. reassigned@ i j poration of Delaware v This invention relates to typewriting machines,

and more particularly to improvements inthe frame structure of such machines. i The kmain object of this inventionY isto'. pro- ,vide an improved frame structureY for typewriting machines wherein -a main frame is provided with readily removable ycoverA members, and thermal' or elements ofthemachine are carried as a `unit 'l by an inner vframe which Yisreadily removable from the main frame.

inner frame within the outer irame'and to ,avoid the necessity of adjusting the position; roigithe frame,

, L It is also proposed providemeans 'foreperatively-connecting -various devices v'oni the inner i frame with associated parts-. on thema'in frame in a manner to permit the innerjframe to here#V time vit Y Vis .placed inthe main f V,It isfurther proposed toprovide; an improved means g for accurately Y locating and holding the Y' f In the illustratedY embodiment 'ofthe'present invention, a mainframestrulcture formsthe out#l erV casing for the sides offthegtypewriting'machine and is Ye'mploye'dyto d irectlysupport certain. o p erating-parts yn.ffthe typewriting machine as will laterappear.v Referring to Figs. 2, 3 and'i, it may beiseen: that .this mainframe comprisesfa rightv .hand sidegportionl anda left hand'fsidefporfA 5 t ion I, 'which portions are joined at ,their,. front `,ends byfaz'lo'w front portion-|1 showninFig; il; '.,.The` rear; portions of-thegsidesfl ,var1'd l6 of the Y fmainframe .are rigidly braced Vbyfanuinterconvn ectinggcross member 2U which isjconnec'ted atjitsi f end mportions to inwardlyi-extending Ylungs, ori-:the

movedv from the main frame without individually manipulating any Yofthe connecting parts.` Other objects, purposes and characteristic'fea- .tures of this invention will appear as the -cle` scriptionthereof progresses, during which references Will be made tothe accompanyingdraw@-A ings, in which: L

Fig. l. isal vertical,' side sectional view .of a w typewriting machine arranged. in accordance,

jig. 3 ,is a fragmentary, top sectionalviewtitak- Fig. 4 is a fragmentarm-top sectionalview of Vthe rear portion .of the machine shown inf Fig. 1.V

with-the present invention, the view showing .cerrtainparts'brokenaway and otherpartsv omitted. Figg 2- isa Afragi'n'entary, frontsectionalz-,View ,takenon 1ine2`2-ofFig. l. f

Fig. 5 is a fragmentary, perspective view of therear` portion of the innen-frame and vparts carried thereby. 1

Fig. 6 is-a fragmentary, perspectivefview' of y a' portion -of the'inside of the mainframe.,

Fig. 7 is an enlarged, horizonta1'sectionalView showing the locating means between the inner frame and the main frame, Y

Y Fig. .8 is a'vertical, sectional 8 8 of Fig. 7.

elevationalview o a 1, butfshowingthe inner frame and vparts carried thereby moved slightly out ofnormal po? edges oithe side portions .3jf

. 453 viewtaken on line ther .braced Aby an. -ntermediatexlchannel @riem-g y.ber 22secu1'ed by means-not shown to the:lclnyver f Iheside por-tions! 5- and '.to. ,provide airigidfmamfirame Structuregfhavinel a smooth and-very. pleasing exteriorfappearance. "1

This'main fr"amje 1structurek is Vadaptedtoibe supe .ported on-afdesk topjor-Iother.supportingsurf"` face'gby'four'eet;23which'may beofthegusnal 1 resilientv 'c (mstruotion mounted on respectivej-inl A*.Wardlyextending portions 2 4fformed integrally' '1. -'Withthe-side membersi andfl. f 40 .in the vend portions ofthe guiderail25 to thereby holdthe'carria'g'ennit against lateral 'shifting in any ,direction relative'to l the -main frame.; 1n

vI 6 .ofthe main; frame are preferably of @ca'stY metal having as mooth" exterior lsurface withAv variousbossesend .lugsV v `formed il'ltegiallyV onfthe inner surfaces, 'thereofwV for mounting certain, partsoi :the machine "as l l shown or examplein lig.Y 16git mayheseeninFigs. 1-andithat'the rearcros's memberf v 2i! is Y 'mounted slightly forwardoffthe;rear- .f wardends, of the -side members l5 and if L6, t jV and 'this'. croSSfmember 2li together 'with the .iront ,portion-- ifi and channel member 22 are provided which may be generally describedV as comprising' a l latchmmernber v2l pivotally to aiposition Whereinsanotchat theeimler 1end thereof venters@rijen'm11er greevelin the extende ing portion of the companion locating screws 26 l ,y u l 2,326,312] frcrders'to normalh7 r hold the carriage 'guiderail'gV y 25 upon the main frame, releasahlelatch means a frame whichV is removably mounted withinthe main frame. Referring particularly to Figs. 1, 2,

3, 4 and 5, it may be ,seen that this inner frame Y comprises aright-hand-side plate 48 and a leftf v5 Ahand side plate 49, both of which are generally Y similar vin shape and construction. The two side plates 48 and 49 are rigidly interconnected by j threecross members 58,51 yand 5,2;eamh of which I is. connected at its endr portions by screws 53 to l0 the'side plates.

as shown for example in Fig.` 1. Thus, in order l Referring to Figs. land 3, it may be seen to Vremove thecarriageV unit, it `is merely necessary to manually pressfthe two latch members 21 which moves the'innerY ends-thereof outof the grooves'in `the locatingscrews v2li and (there-f y by permits the carriage guide rail structuref25` 1 to gbeliftedlupwardly and'oi the main frame,A `A carriage truck or movable frame is mounted* `for movement-transversely.of the machine .on 'the guide rail structure 25.

' struction as thateinployed vin the'V usual Remington fMcdel No.' 17 machine, and may bel briefly Y jdescribedas comprising `an' inclined railfm'ember "38 having Yguide-wayssat'itsrfupperand lower edges." Antiefriction rollers Sli (seejligsfllare ledlorturning-movement'in the usual m anner.`- 'l The carriagelis moved inthe'1ezterspacingu- Y` springdrum asshw'nzin Fig.-:4`,whichspring drum isA -mounted'fon the iront side; of thecross "member 28 of the main frame vand is connected bythe 4usuals'pring drum' tape 'Knot' shown) to the movable 'carriage frame, fI'he letter spacing f m'o'vements of theV carriagefunder-theforce Vof jthe springdrum 35`-are` controlled by'the usual Y, "escap'em'ent mechanismshown 'in part in 'Figs i72- and vThis escapement mechanism includes anv 'y vesc'apem'entWheel STWhch'JisrnOunted to" turn 1around a screw 38 secured Atora'fbrfacketi 39' (see.` -Fig. 4) mountedfonfthe'crossmember 28 of the "fmaine-frame.;1 'Ay pinion gearl is connected'to l I the escapement wheel 371,' andithis pinion meshes Withaffeedl rack 4l which is mountedon the mov- Y ablecarrialge frame inthe usual mannen', Y .Y

' '1Adogrcik'er mechanism cooperates with-teethvv v 31 ofltheescapementwheel 3l, which dogroclter mechanismrincludes a rockeribracliel',Y QZ-'asshown v"'in-lidgeld The bracket 42-is mounted Vforroclringlmovement abouttrunnions 43 carried'by-the1` Y bracket k39.1A 1 A normally"engaged-holding dog- 44 "is pivotally mounted'on the 'rockerbracket` 42, and a spring 45 acts on the bracketfn tonorf v`gfagelnent with -a` vtooth 3l' Vof `vthe" escapernentY fwl'ieeas shownin Fig; Astepping dog Mf'is formed integrally-with the krocker bracket '42 to cooperate withthevescapement -teethyf when [thei'rockerrbracketis moved again'stv'theforce of.A

the springi. r l

' From the foregoing description, 'it Vwillfbenoted that ,the'carriage and parts, such as the springdrumand escapement mechanism-Which are di- Y rectlyA associated therewith for controlling its This movable carriage l V`Trainer structure may be Vgenerally :the same oon-V that the lower Vrear cross member 50 is provided with spaced slots for receiving the rearward ends U of printing key levers 54 which are pivotally Vl5. mountedoria wire 55 Acarriedvby the cross mem- 50'..V They key levers 54 extend'forwardlyV fromV thecrosslmember 58 through slots in a guide comb'l secured at 58 to each ofthe side plates 48 and 49. The front ends of the key levers 54 provided withfinger keys 68. 'A l Y The lower front -ross ymember 5l '.is likewise provided with spaced slotsl which receive sub- Alevers 62-pivotallyjfmounted cna wire $3 carried 20 Vextend upwardly in the usual manner and are i Q5 by the cross member 5I.' The intermediate portion ofea'cn of thesub-ievefsez iscorinect'edby y `-alink '64 rto an'iupstandingportionfonjthe Vcom-v fpanion'key lever 54; andfalreturning spring 65 Y'acts onf each of? the fsubieversljSZ fin the usual omannenw A YAftype barsegment SlisY mounted onlthe upper y *crossv Vmember 52V forcase jshiftngmovement in the'f-manne'r 'i'iisclosedhin the col-pending applica,-

tion Serial No.'292,461 led August'29,.l939.` The 35 f segments'l carries typelb'ars mountedin radial j Y slots therein Vt'omove'to and from printingposi-Y tion'jabout a'fulcrumewie 63." Each type -bar $3 'is' operatedby itslcomp'anion sub-lever-EL regard-V fles'sbf'itscase shifted position by a connecting 40v link-10extendingfrom-thelowerrearward part Referringto Figs..- l; 2 Vandl,` it may. be seen' Vthat a universal memberfiri "the 'formof va semi- .'5 -circula`riloar 13 "is-'mounted on the segmentmem- -ber 6T 'tobe actuated by. 'the printingY movement of any one of the type Lbars 558 intlie'us'ual many "nel:` `VThisr universal bar 73 is provided with rearlward extensionsv Whichare 'pivotallyVv connected so vto .uptsanding portionsof a'rockshaft I4 which V55 portion l1 which carries afpin 'I8 adapted-to slide in an opening in the'segmentfmember 6l.

ThefinnerA removable frame vtl'ius carriesfthe l key-leversifandtype actions of :the present machine' as `Vwellas other associated rmechanism which will later be described. E1n accordance rvviththe present irn'fentio'n, this inner frame is mountedwithin the main -frame for Vready re# v movaltherefromrand in a manner which securelyand1 accurately positions the type actions and 65 associated'parts in proper "relation to the car- Vv.wri'age and 'other'. parts onthe mainframe cooperating therewith. M

that-aninwardly extending shelf portionfy85 is K formed. integrally with tlie-lower'- edge portion "letter'spacing .movements are all mounted on the *mainframe of the machineand inaccordan'ce witlrthe present invention, theprinting instruifmetsiiues such @relief-type ,action andv otherv` parts related thereto: are mounted4 onV an innen i5 of each] of theV side members I 5 and 'lof the fmain fratrie.`V When the inner `frame vstructure is `'placed'witl'iin themain frame,fthese shelf por-k Ai I n Y af typewriting machine; itY 'is 'necessary to' "very' accurately locate the type bar segmentfwith relation to the platen or'the carriagefin Va f orefand-'aftdirection.A If the type barsegment'is located a slight distance too far inVA front `of the platen, or a slightrdistancejtoo far in therear ofthe' platen, or'if there is a possibility of relative shifting, movement betweenthe vtype seg- `ment andthe platen, improper printing will objviously result. Accordinglyymeans have .been

provided' in accordance 'with the present invention for Very accurately locating the' inner re- Inovable frame-with relation to the main frame andgto'securely hold these-parts in such relative position'in order to `insureV that the typev bar seg-l' ment is always properlyv positioned; with relation to the platen.'

maybe seen that eachof the Abars 90 is 'securely "claniped against the associated-side plate by screws SI f which pass through elongated openings in the sideplate and-arethreaded, into tapped 'openings inthe bar. :These openings in the side 'fpla'tes 48 and 49 which receive the screws 9| Vare V`elongated in a horizontal dir e'ctionk toV permit adjustment of the bars 90 horizontally Vwith re- 'spect' to the side'plates 48 and49 when the screws. Si are loosened.

In order to`facilitate v.accurate adfiustmen't of eachof the Abars 9B with relation tothe associated side plate. anefccentr'icadjustingffmeans has .beenprovide'd the form of ascrew 9 2 .thread- 'ed into la tapped'opening'in each of .the. side plates 48 and 49 and having aneccentric'portion 93 entering a vertically elongated opening infthe locating bar 90. V'Ihu'swhen thel holding screws/9i are loosened, each of the bars-9 0 may --be very accurately adjusted long itudinally'with 'relation tothe associated side plate" by `turning 'the'screw 92Jwhich will act through the-eccena 523263121? A'structure engaging-thelowerv edges oi the Y side plates 4 8` and'49. In' order to prevent later- 'al 4 d isplacer'nent vof the innerjframe'with'rela- "tion to" the mainy frame,A a guide strip- 86 A'is selbe' very-securely heldf within -the'main frame ``-bya curved. arm- 98V pivotally frnfounted`A at its] upper 'endfatSS on-anfinwardly extending Vboss on 'eachoffthe side 'members' I54 andflof thej f mainframe. The lower endof eaohofV the curved Y f arms 98 is provided witha vertically elongated 'opening receivingan ladjusting memberlhaving an eccentric "opening v.therein *receiving thebodyportion of theholding-s'crew--I'Ul whichis "threaded in to an* 'inwardly extending boss on 'the associated 'side memberofthe main fram e.* I' 'An inclinedportion 98..isprovided on the front edge of'ea'ch vofthev curved; arms 98,' and each 'of thecurvedfarms Sfis adjusted throughthe z ecc'entriememberlll soithat'thisl inclined portion 4against"'forward orY rearward shifting movement, means are provided fin-accordance 4with the pres-n 'ent inventionwhichLfcoact with 1 the rearward 'ends of the locat'ir'i'g' bar .-l-ltl, whichmeans are 'made-f 'adjustablejfwithjr'relationviio thev front.. 1 abutmer'its 9 5 vsof thatV 1 'theV space'. therebetween 'may' be a closely adjusted"ftd-accord. with the( length oflthe locating'fbarsf. j This adjustable' 93 snugly vengages the-curved rearward end'of the associated'locating bar Sil when the-front vend orf 'this-bar is in engagement with'theheadf of the associated 'screw-v 95.- The? inclined portions 98' 'onthe-{adjustable a'rins"ljthusoperate on'the; irearward endsof the'locating bars 90v to;preven t 1 'rearward displacement 'of the inner frameasseni-V bly with relation'to'the main frame', yand alsotof preve1it` any upward displacementfof the rear'v portion of the inner'frame.

Releasablellatchin'g'means are p1`-ovided in ac y- I cordanc'e with the present invention fornormally Vholdingthe-front en'djof theinner frameassem-:- lbly against upwardjdisplacement withf1relation'j- 'tothemain 'frameReferring to Figs. 1 2 and, y3,'this releasable'latc'hing'means comprises -apiv" tedv latch arn''l I0 mounted-'0n the outer sidefof Y each ofthe side platesg and-48 'of 'the innerVY T.Each of theselat'charms I I ispivothally mounted by ashoulder screwV Il] threaded` 'into' the j associated s idef platei''and thej upperf portionof each'of V the 1atch`armsl l0'is 'provided f witha-notch l I 2 Iwh'ichcoactsgwiththeheadfof an associated screw l `l' 3 threaded into a'boss extend- `ing inwardly Afrom eachofsthefside-portions"l5 tric portion 4553l to move the'bar either forward- Vly' or rearwardly tothe desired position. The` holding screws '9| maythen be tightened to 'securely lock 'thelocating bars 9 0 in their adjusted position.

rlhe front, and rear endsjfof the locating bars '98 coact with means on Athe main frame for preventimg displacement of -*the inner frame .eitherforwardly orrearWardly from normal position. Thus, as may bes'een-in Figs. 1 2'and '7, a headed screw 95 is threaded irito an inward- *ly extending .boss portion on'each-of theside i members I5 and I B of the `main frame. @When the inner frame assembly is placedwithin the "and I6 0I" the main 'frame'."""` VThe lowergedgeportionfof'the notch |12 in eachV ofthe latch armsj'l is inclined as shown particularly in Fig'. 1- so thatawedgingor (camming Aac'zti'on is effected thereby.' on the' headoff-the associatedscrew U3 ras'tliedatchl armyl'HJ is i VYdrawn rearwadly underthefforce of an associated contraetile--spring ""'lfiffEacW of fthe Vbetween'th'eupper end of' `llfand a pin H6 on-.the asso-*r j 'ciated side plate; When the inner frame assernbly-1s imposition within' 'the main f rame,the arms I'Hlare thus operated by the springs ||5 to a, position wherein the camming surfaces at thev` lower portion ofthe notches ll l2v coact with the heads of the screws H3 to securely hold the front Y 'portion'oi the'sidejplates'48 and 49 in engageinherit with` the shelf portions 85"of1 the main' 'frarneiz "Whenf the inner' frame is placed within the 1 f mainframe the weightv is supported Iby thel shelf' portions 85er thejmain 'irarnefwhilellateral displacement Ais prevented'bythe guide strips'786 Ventediby the cooperation of-theabutments- 85 kdem.enr-1e, bars se, whilenpw'arddierleeementge the front emi fefftheinrller frame ,is prevented :by :theaction ofthe springepressedlathgarnisI'lil :the screws Hq; ach ofthevarms Siinaybe onels ffeaon of-thelocat'ing bars withthe coL' Opera abutmentsyre and-S-Tne inne-r' reame Ymay elselbe adie'ted-iwith: relation to; the

locating bars Si) by .releasingthe holding screws :ai and turnimathe eccentric! adjustments 82 until the exact 1 lforward and; rearward. position and is'cbtai-ned *with relation'totheplaten 33 and other cooperating parts' carried' by the. main frame.; rIhe holdingscrews 9|- and I!!! may then be s'ecurely'- tightenedsoi that inner frame rigidly retained `in its proper position.. l,

The entire inner. frmeassembl'ymay be easily .andquickly .removed Y-ffrern the mein frame ley amerely operatingbothofj the Ylatch arms 5| f o1 v -wardlyandthen raisingfthe'front portionjof the inner frameupward so that therQntf ends of the' ,la'tingbars Si) are abovethe headsfof the screws ,SQ .thereby insuring thatthe rearward Y'portion -j-position behind the heads-of 'the screws S5', the

- latch arms `l lecoeperatefwith thescrews ||3 of fthe, main frarneund'ertheforceof tthe springs l I 5 to insurefthat 'theiron rtiorifof the inner frame issecurelyrheld pro position-upon the shelf :portionskBQf-:

` he escapement y .ed on kthe mainj'frame isoperated by theunivervsal barflv which is mountedonV the inner removf :able- `frame, and Vaccording.ly means are provided in: accordance with thefpresentinventon forop- Ydog' rocker i2 without inany-manner.interfering with theremov'al and replacement-of :the ini ner vframe assembly ,with -relation to the ,main j frame Referring-to Figs;V 1,`- 2; 4 and 5;'fthe rear- `ward extensionat-the' left-hand side of theuni- -versal bar 73 isl provided ywithua contact portion |29 whichrcoope'rateswitha pin' |2|' at the end j vofa'n upstandingrarmlZZ V(see Fig. l) onta rocker -bracket |23 This rocker bracket is pivotallyA Ymounted at |25 on a U-shaped bracket |25 which i depends from lthe horizontal portion at the top Yoithe'rear cross member 29 of the main frame.

f i-roeeretioeief:the-dee .rockeegez' ':Theee -Serereble n connecting parts liliand-I 2 ohtiouslyfpermittlie Y innerfreme @be reelimemeved item ehfe'meln vf-reme. feneieedily freeleeediherein, without ina.-

vnipulation o f any oijtheparts 'connectingthennii f-verseliberiwiih-ihe seeeerementgdee reek'er 1 'alhe preleentmeehine eleeinelildesl .e .ker-o1.y

15o individually; adiueed 'Lili il-'1e mennerreeveusly 'eoiniedgcut to @freebie ,Snueengeeemeet vQi the vthe 'correctrelative alignment of. the inner Vframe e in the .usualmannerto'lg- ,Y ar'rn' o n theirocker bracket '136.

erate'd b acksp'acingmechanism cooperating'wth iheieefepefientlnheell ie .eeeee e 'beek-Sewing movement ofthe carriage, Referringfto, Figs. 1.

.nioiuitedzon the c'ross, member 50 of the inner ram'e, a.

which cooperates wit [bracket vis pivotallymol'nted'at |31 on' abracket |38 secured tothe rear-1,cross.llierlflbrrv 2,0 of the mainframe 'as shown. lnFig, The lower end of a back-v spacing' pawlfM. is pivotally connected arwardly extending An operation of the back-'space keyilever' |32 operates vthrough the. abutting connections .|34 'fand|35'to cause an'upivard'moverr'lent oi the back spacing -pawl 14a. which cooperates with 'the escapement' wheel 31 to 'cause a .backe'spaci'ng movement of .the carriage in thefusualfmannen fmovefl from the machine by anjupward and forp'a'rabl'e connecting parts L34 :and '|35 readily removedandreplaced -with relationt'o' the frame .without manipulating- 'the 'operatiue The space bar 'nehanisrnein the'p'r'e'sent'majchin'e is entirelymounted in the main frame and rauhe front andermaal leverslisrwmcn are -o the inner frameis,inpropervposition upon' the .shelf portions nffthe mainfframe. Thus, when thejorward endsof locating .barsgSU moveinto` vfare pivotallymounted on a cross'bar |'.51' exteni d -L fingbetween theside'vplates 48 and48- of the-inner eratively connecting the universal bar;` |3' w it h` the mi is mountedon pivotgserews 14a (see, Eig. 2') extending endwardly from the two side portions l5 a'nd'l vo'ffthemain frame' and an' arm |43 f extends rearwardlyirom the rock shaft |'41for A tabulator'mecha'nism is al's'oiprovided'in th Y "present "machine which includes a tabulato'x" bar |55mounted atthe end of 4parallel Iarms |56which 'vfra'n'e' as'shown in Figs. 1 a'nd'3. 'A depending "Perdon offone @finer-apuntar arms" ess Ais piviota'lly connected by"`a link |52 to the depending mounted in'f'agude-slot'in the cross member 52 .The rearward extendingend ofthe .bell-crank |58 A 'depending arm |27 (see FigfZ) on the [rocker i ,bracket `23"v ,is pivotally connected by a link 28 'togthefdog rocker 42 whereby the rearward oper- .a'ingmovement of thelmversal bar-1 3 operates Y f 'rnolinted on the carriage.v

.is providedwith an adjustablecontactrscrew |53 l 'as shown in Eig. 5, which contact'screwjis normally in a position to coact with the lowerend ora tabulator stopin'the form, of a vertically dsl ftion of the-U-shaped bracket |25. "The upper .Y end or the stop member: ISB-is'operated upwardly by depression of the tabulatoribar |55 into a posi-y :tion cooperatingwith tabulat'or stops (not-shown) The tabulator mechanismals'o includes a tabulatorstopsetkey 65 '(s'ee Efig. 3 ).which is mount..

atacar-1.2

ed; at'iV-the front; end: of? ankarmV |65 .otaqrocker bracket |67. which. is mounted 'to turnaboutthecrossjbar |51.. A depending Yarm on` the rockery/r bracket 67"! connected vbyja link 68 to the def; pending armvof abell crank |69.whic'h is similar to the ben cram; |53 and` mmmtedinl a slot in stop blfnor shqwa,wnchiisimoated-fentre detacable carriage railg 251A for. oper-ating the-map gin stops toareleased' pcsitionin the *usual,majo-v f' #ner-5111 margin 'Siep-.ff lease arrangement the cross member 52 ofthe inner frame to turn Y.

about the pivot rod. |59.V The rearwardly'exf;

n tendingportion` of the bell crank |69 is provided Y fwith an adjustable contact screw |10. (see Fig. 5)` which normally. cooperates with the lower endgof bhefkesr lever-mechanism elevated Gn the@ eerY ra'meinc'ludes; acontactportionwif whichgis readily separable from the-'cooperating part 89 mounted on the main frame .top-ermit'the inner frame to be readily removed iromtlie vmain frame without manipulatingY these?V interconnecting ber is guided bythe slotted bar IBI and a slotgin thebracket |25 on they'main frameyin asimilar manner'to the Vstop member IEE. The upper end of the slide member cooperatesfwith; mechanism (not shown) on the carriage to prjectjthe carriage tabulator stops into eective the usual manner. i g Y The Ytabulator [mechanism1` further. includes means for clearing or restoringtl'ie carriagestops v to ineffectiveposition which comprises a stop; clear key |13 at the front end ofan'arm1 |'|4,of=a l position ;inV

rocker bracket, lwhich ismounted to turn about.

the cross bar I5?. -A depending portononthe rocker bracket |'l5 is connected by alinkl'lto A member 52 ofthe inner frame to turn about `:the pivot rod |59. .t The bell crankll is likewise provided Vwith an'adj'ustable-contact screw |'l8fwhich cooperates withthe lower end of a slideimember |19 which is likewise mounted onrthe main frameA f by the slotted guideloarv |6| .anda vslot in the bracket |25. The upper end of the slideY member |79 isshaped to coact withthe carriage tabulator stops when operated upwardly by-a depressionv of theclearvkey |73 in a manner to .canse these carriagestops to be cammed backtoineiective The tabulator mechanismV of the. 'presentgma-V chine thus includes key lever mechanismmounted .on the inner removable frame as wellas'partsroperated thereby whicliY arev mountedlon theymainj frame, and the operative connectionsprovided by abutting relationgof Ythe Contact. screws |63,4 |10 and |78 with the lower ends of the slideV members l |68, Vand |79 respectively provide separable connections permitting theinner frame'tc: be readily removed from the mainframe without individual manipulation oi-anysof these operative connections. y .f The present machine also includes mechanism for releasing Ythe carriage margin stops 'comprising a margin release key |85 at. the front end of a keylever |86 which is mounted izo-.turn "Y about the pivot wire 55 carriedby the cross memeber 50 of the inner frame. VYAn arm |81 .(seeFigs. 1A and 5) extends rearwardlyand upwardlyffrom Vthe depending portionof a` bell crarnkVlr which isfsimilar to the bellcranks |58' and |69' and is .likewise-mounted in a slot inthe cross bail `i 98nd lits* position shown in Fig. 1.

Linehlocking rne'clranism` is "3 also previded 'in' Ythe presentmachine which'ifunctions toprevent eiective operation of the printing key. levers :and the space bai' njrlnen the .carriage reaches v a `pre-v determined Vleft* hand positien. 'Lv Referringrtc Figs'. f l, 2 and-4, 'a universal line lQQkbailJBSismOUnt:

ed for rocking movement onpivotscrewsflil carV frame. 'upstandin'gfar 01rd @he universal As ShWn'in'Fie. @tithelow-e"M pass v.beneath hooked portions onupstandingarms 209 VOn-thespace lcarflevers |46.: and`4 thereby pref Vg lvent?, an.v effective operation 'o'fjthe" space bar as 4:0` position by the movement` of theV carriage. ,te s

' Well Aas theprinting Ilreyflevers.`

` "The-portion of! theline flock 4fremovarie'mime,and'this l anism cooperateswitlipartsnounted'infthemain" Vframefwhiclj. arecontroll'ed ,inthe usual .manner toy l The rearward .end ofthe'crankfarm"292. is prior-gf vided lwtnf aiyupturned contact prnoniz l 2 4- v VadaptedtofcooperateLwitlitheeridfofan adjust-v p however, isy normally effective ing ma 2m eihomfthegjrbottnr eine 10d;A .han |93 'inf its illustratedforward.position wherein mannered portion '|9871,ages.notieoact'witnme Y portions and V2|lil'of Ithe key levers andjthus permitsffre operation thereof;

iai' *described fis` entirely portionofjthemech'- by the linelck 'stop mechanism ,onthegcarriagei K. ablefcon'tac't screw EIS-carriedby thelwerend the key lever |35 andthe end thereof is provided with a'contact portion |88gwhich coactsiwitha"V pin |89 at the lower end ofa bell crank 80 car:-

ried by a bracket |9| secured tothe crossmern-V ber 28 of the main frame. as shown in Fig.2..f..:

n The rearwardly extending end `of the bell crank 90 coacts with the Varm of-.a transversebellcrank |92 (see Fig. e): which is pivotall'y, mountedat V|93 on; a boss Vprojecting1rearwardly#fromithe' 'rear cross memberZ of4 themainzframe.'V The uppergarmlof the bell crank |92 cooperates'with a toeportion of a slide member |93u (s'eewFig. '-1) mounted on the detachable,guiderailj25of vthe carriage.structurerV The upper. end othe'fslide L member |33 is connected to -.the .usual Vmargin A end of thesswinging. armAZl is Yco ma bracket 2:16 'SeCuedftO-iheerosi 0 Aof the main .f-rame, The -left hand .nrleted'tthe dependingqarm .of a bell crank 2 l 8 Vwhich is Valso jpivotallyrnount Ontl'le-bracket 2 |6-andis pro- 1 .vided"with.aneupstandinearm (not shawlv" @of acting with lmechaviemf f; the-1usuaz-90estmcs tioniemriloyed 'in-thefReenetbn Model Nall, mahmewhichis' mounted naheffcariag-uit f aridfis ppeliateabr @eline-Meltemi@ .toeffebtppf y -..aeration of the portion pffnezime .lockgmechae From the` above descriptionl of @isernia 295) .the connecte" s theisides of the main frame.`

nach or the side flanges @ferirecyerllziais provided with a 'hook-shaped vportion 521i' which ward displacement; and means-areprovidedat the Vu'pper-portioii of theV covermember 21e' for retaining the hook-shapedportions 21| in posi-f tion'on the pinsl '212 and to normally hold-the upper portion againstV rearward and 'downward e Y n 2,326,812 i the verticalside 'Y flange VVVportions` V'are adapted to" vlit' closely-inside the A,rearwardv end portions ofy justinent thereof. This inner frame unit. isfthenl 'sultyit `has' been jn'ecessarylto 'provider separable' displacement. This" meansVv comprises `a'hmikshapedr detent member .214;VV pivotally connected at -215 to 'each of the 's'ideange's of the cover'z'l and having a curved portion-'adapted to partially embrace the upperportion of a pin Zexten'ding inwardly vfrom the rear upperlportion-of eachof the side'portions l5 andf'l'of the main frame.

-JA 'contractile' springv'2-11 'extendsnbetweenffa e forward armfon each of thedetent'members2li anda lug formed onthjs'- associated zside flange' of the c'over member 219.- These L*springs V21? l'act Y on the detent'membersf214in a' manner to `se\ Vcurely hold the lcover memberA 2153A :in 'aposition wherein the`-iront edges of the :side `latnges-'there V .of engage the'vpins' 21B, andltheinclinedfinner Y edge portionsof the hook-shaped ends'of ther de-` tent members 214 exert a camming or wedgingA actionfonfthe pins1216fto-normally hold the cover member in an upward land inward `position against Vaccidental displacement.

Whenrit is Ydesired. to remove the' rear cover tions 21| are rst hooked around .the screws 212 Vand then the top portion is forced forwardly so that the inclined front portions-of the `detent members 214 are cammed upwardly by engage# 'I'he cover member 210 is thus eiective to completely enclose the rear portion of the main frame aswell as the rear portion of the carriage assem-v bly, and'yet is readily removable to permit access toany ,ofy the parts at the rear of the machine. It will further bepnoted that the rigid hook- -shaped portions 21! at the bottomof theA rear cover member pass beneath'the pins V2112 on thev main frame, and accordingly the cover member 210 will not be inadvertently displaced or re-vV moved if the machine is raised bylifting upf wardly on the' lower edge of the cover member.

When it is desired to replace the cover member 21S, thevpor- Y Alfurther important feature ofzithe present-fin Y Vention residesffin the arrangement Afor'adjusting,v

theeinner removable framewith relation to the` y mainframe to afford properr operation of the mai chine. Whenv the proper adjusted relation be`` -f tween the inn'er frame andthefmainframefis once obtained,thiskadjustment is not disturbed by the removalvr ofthe inner frame assembly and g thesame proper lrelatioiris assured when' the inmember, the upper portion thereof may be forced I "Y f ment with the pins 216 so thatthe noses of theV members 214 pass'over these pins-whereupon thesprings 211 become effectiveto securelyhold the cover member in normal position.'

connections between various mechanisms .which arejointlycarriedtby the inner `frame and vthe mainframe.v4 i .i y ;V Aaf, :In the present. machine, fthese. separable .'con-v f Anections-have been included in 'the escapement mechanism,'1-th :back.rspacinglmechanisms the",l -v tabulator. mechanism, the \margin'Istopreleasing` y mechanism, the line lock'mechanism-and the o ribbon feeding mechanism. `Each olf'th'ese"-dilierv fent mechanisms' is carried i'nlpartiby the/'inner e, f rrame'and 'in partgbythe main '.framefand thek 'interconnecting partshave beenfsoarrangedthat e thesinner frame `may be 'readilyfremoved without individually manipulatingsanyf of r`these conn'ec-` tions iandfwhen-.the innerframe is=v replacedall Y .are-brought intoaf-:col

of'..these connecting parts V'operative relation. f:

ner Aframe is replaced. Y l I The invention,claimed-is:V j i' l. In atypewriting machine,` .theV combinationv Y of a' mainframeincludingiront andsidej portions, an innery frame, releasable latching means f f for securing said inner frame-within'said rnainv f frame, a rear `cover member for closing the rear portion orl saidfmain frame, means Ycoacting be-V tween said rear cover :member and `said rn'ainl j frame for releasably `latching said rear coverH member on said main frame, Ya top cover memv f 'Y ber for closing a portion of the top of said main cfa `main frame including'front and side por.-V

tions, ak rearV 'cover` member for closing the rear portion of said main frame, means for releasa-v .ably latching saidv rear cover member'on'said Y main frame, a toprcover member for closingA ay portion of, the top'of said main frame, and'- An .improved frame structure fora Ltypewrit'- f Y ing machine has thus been provided wherein theY main frame has top andfrearcover members for protecting the internal ,partsV of thefmachine e of themachine A i.

This main frame of the present machine has against dust and dirt and to reducethe noise of .Y

operation of the machine. A particular `feature frame," and `means Vcoacting. between said. top.y cover memberand said inner frame 'for releas-V -ably latching vsaid top cover member on, said e main frame.

2f. In a typewriting machine, the combination means fcrreleasably latching` said Y. top cover" member onjsaid'main framef 3. In a` typewriting machine, thecombination of ak main frame, an inner-frame'removably f mounted v therein, locating bars adjustablyA y* v mounted oni said ,inner fframe, 'iixedabutments l' on said mainframe ,cooperating with vone :end

' of said vlocating bars, adjustable pabutments on the main frame cooperating with the yotherpendf` of said locating barsyand releasable latch means coacting betweenxsaidmain Aframe andsaidinvonly a few parts mounted at the'rear portion and 75 ner frame to normally prevent movementof thel side vportions'thereof lwhiclimay be easily andfA quickly assembled thereon. :The majorfelements' 1 j arefthenbarried asa-unit byganinner-framev which' permits very convenient yassemblyand ad; i

4.. In aftypewrioogmehme, thelemoafin- '-of, a moin fmmezarrnneryframeremovabiy Y mounted thertenyguide `Ways in Said main, Vrzuaaejf for, supporting said. inner vixfaane; vagainst', datemi:

movement, adjustable means: cooperating; with', ASaid.` inner frame aforf,.preventng enwise monroement ,of -said Yinner .frame relaton -toz said:

meansfto prevent` edwis'e movement foi Vsijd: in-

' inner 11ndzouterfframes; ja" locating; kmr;v ex:- Vtending in a f ore-ond-aft direction yoil-one ofV tween vsvgidernain imm@ andlsaio irinen-frjame-ion reasably holding'"saidA locating mea-ns inlof opertvereltioh with sadi oleansfon'the rhein.

main frame, means on'sadv'mainirame comixing with the fmyil'a.1.d.oxide-oi eaidf'looating heirs to .prevent farvi/'afro #maniement Toi saidl rmer# VHome with i-relagtion-tosindl main {mmm/.any1 re;

Mable 'holding Ymewns fior; preventing npwagtdi inner frame with re11a,;i=m to' the outer firme; and` moana; coaching. between. sai'dtinner and;

tionsg, a "rear oo ver, meargs- 'rigidi-y; holding the lower portion reif. .sidxrer @over osein :hore

zontal endg-upward'. movement,A ,but .eiordmgf 1 downward movement1 relativeio the; main, fra-me;

1 and detenta meapsreleosobly holding; ,the opper f portioV of 'saidv rear( cover againstreafrrwarqiand @QW-nward fmwment A to permit; vaxfexneval Y of the' rear-v Cover; 'only by-1*VV rearward: enel?l downward j

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